Since the Wright brothers first took to the skies of Kill Devil Hills, North Carolina, 17 December 1903, first flights have been important milestones in the life of any vehicle designed for air travel. After all, it’s one thing to design an aircraft and make it fly on paper – or computer. It is quite another to put all the pieces together and watch them get off the ground.In late January 2019, all the pieces making up the flight model (actual vehicle going to the Red Planet) of NASA’s Mars Helicopter were put to the test.Weighing in at no more than 4 pounds (1.8 kilograms), the helicopter is a technology demonstration project currently going through the rigorous verification process certifying it for Mars.The majority of the testing the flight model is going through had to do with demonstrating how it can operate on Mars, including how it performs at Mars-like temperatures. Can the helicopter survive – and function – in cold temperatures, including nights with temperatures as low as minus 130 degrees Fahrenheit (minus 90 degrees Celsius)?All this testing is geared towards February 2021, when the helicopter will reach the surface of the Red Planet, firmly ...